Home / 5,139.39-7,687.11-4,289.92

Finding the Fourth Proportional to 5,139.39, 7,687.11 and 4,289.92

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Solution

The fourth proportional to 5,139.39, 7,687.11 and 4,289.92 is: 6,416.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.39 : 7,687.11 = 4,289.92 : x
  2. Step 2: Convert to fraction form
    5,139.39/7,687.11 = 4,289.92/x
  3. Step 3: Cross multiply
    5,139.39x = 7,687.11 × 4,289.92
  4. Step 4: Simplify right side
    5,139.39x = 32,977,067.71
  5. Step 5: Solve for x
    x = 32,977,067.71/5,139.39
  6. Step 6: Final answer
    x = 6,416.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.